What Can I Use To Relieve Red, Itchy, And Sensitive Skin At The Pubic Area After Shaving And Using Dettol To Clean?

Hii Doctor , I am 18 years old boy. Yesterday I shaved my pubic hairs after shaving i cleaned it using Dettol liquid but my scrotum become red , itching and highly sensitive , can you please help me to get rid of these and what should I apply for this ,any creams